Science, Tech, Math › Science Periodic Table Trends Quiz Test Your Understanding of Periodicity on the Periodic Table The periodic table is arranged to group elements according to trends or periodic properties. STEVE HORRELL/SPL / Getty Images Science Chemistry Periodic Table Basics Chemical Laws Molecules Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. Learn about our Editorial Process Updated on March 08, 2017 1. Which of these elements has the largest atomic radius? aluminum calcium fluorine potassium sulfur Correct Wrong 2. Which of these elements has the smallest atomic radius? potassium iron arsenic bromine krypton Correct Wrong Both atomic radius and ionic radius follow a trend on the periodic table. The radius increases as you move down a group (column) and decreases as you move from left to right across a period (row). 3. Which of these elements has the highest first ionization energy? oxygen beryllium fluorine carbon boron Correct Wrong 4. Which of these elements has the lowest first ionization energy? sodium aluminum phosphorus sulfur chlorine Correct Wrong The first ionization energy is the amount of energy needed to remove the first electron from the outer shell of an atom or ion. The trend is that ionization energy increases moving left to right across the table and decreases moving down an element group. 5. Which of these elements has the highest electronegativity? lithium nitrogen potassium arsenic beryllium Correct Wrong In general, the highest electronegativity values are those of the halogens (e.g., chlorine, fluorine), but other elements on the left side of the periodic table also have high values (except the noble gases). 6. Which of these elements has the lowest electronegativity? sodium aluminum phosphorus sulfur chlorine Correct Wrong The higher the electronegativity of an atom, the greater its ability to attract electrons to form a chemical bond. Electronegativity decreases moving down an element group and increases moving from left to right across a period. The exception is the noble gases, which have a stable octet and nearly no electronegativity 7. Which of these elements has the highest electron affinity? astatine iodine bromine chlorine Correct Wrong 8. Which of these elements has the lowest electron affinity? polonium tellurium selenium sulfur Correct Wrong Electron affinity is related to electronegativity, so these two properties tend to trend together. Electron affinity is how readily an atom will accept an electron. In a period, the halogen will have the highest electron affinity and the noble gas the lowest. Otherwise, electron affinity increases moving left to right in a period and decreases moving down a group. 9. As you move up and to the right on the periodic table: atomic radius increases and electronegativity increases atomic radius decreases and electronegativity increases atomic radius increases and electronegativity decreases atomic radius decreases and electronegativity decreases Correct Wrong 10. As you move from the top to the bottom of the periodic table: ionization energy increases and electronegativity increases ionization energy decreases and electronegativity increases ionization energy increases and electronegativity decreases ionization energy decreases and electronegativity decreases Correct Wrong Periodic Table Trends Quiz You got: % Correct. Trending Up Once you understand periodic table trends, you'll be on the road to scientific discovery!. Westend61 / Getty Images You didn't come into this quiz knowing much about periodic table trends, but your knowledge is trending upward. Here's a handy chart that summarizes the periodic table trends. Ready for something different? Take a quiz to see if you can recognize the chemical elements based on how they look. Share Your Results Periodic Table Trends Quiz You got: % Correct. Periodically Brilliant You know about the periodic table!. Caiaimage/Tom Merton / Getty Images You display flashes of brilliance, as far as understanding periodic table trends. You missed a few questions, but that's nothing a quick review of periodicity can't fix. You could also take a periodic table quiz to see how much you know about the table (with answers that help teach you new facts). Or, try a fun personality quiz and see which chemical element you are. Share Your Results Periodic Table Trends Quiz You got: % Correct. Pretty Much Perfect Jonathan Kirn / Getty Images You're pretty much perfect, as far as understanding periodic table trends. You can check over the periodic table study guide to see if there are any gaps in your knowledge. Ready for a challenge? Let's see if you can ace the 20 Questions chemistry quiz. Share Your Results